Interferometric Evidence for Resolved Warm Dust in the DQ Tau System

Abstract

We report on near-infrared (IR) interferometric observations of the double-lined pre-main sequence (PMS) binary system DQ Tau. We model these data with a visual orbit for DQ Tau supported by the spectroscopic orbit & analysis of \citet{Mathieu1997}. Further, DQ Tau exhibits significant near-IR excess; modeling our data requires inclusion of near-IR light from an 'excess' source. Remarkably the excess source is resolved in our data, similar in scale to the binary itself ($\sim$ 0.2 AU at apastron), rather than the larger circumbinary disk ($\sim$ 0.4 AU radius). Our observations support the \citet{Mathieu1997} and \citet{Carr2001} inference of significant warm material near the DQ Tau binary.

14 pgs, 3 figures, ApJL in press

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Cited by in corpus (14)

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• Close Companions to Young Stars. I. A Large Spectroscopic Survey in Chamaeleon I and Taurus-Auriga
• A Disk-based Dynamical Mass Estimate for the Young Binary V4046 Sgr
• A Disk-based Dynamical Constraint on the Mass of the Young Binary DQ Tau
• Recurring millimeter flares as evidence for star-star magnetic reconnection events in the DQ Tauri PMS binary system
• Accretion and Magnetic Reconnection in the Classical T Tauri Binary DQ Tau
• The hybrid disks: a search and study to better understand evolution of disks
• GW Ori: Inner disk readjustments in a triple system
• Anomalous Accretion Activity and the Spotted Nature of the DQ Tau Binary System
• Pre-main-sequence binaries with tidally disrupted discs: the Br gamma in HD 104237
• The Inner Disk and Accretion Flow of the Close Binary DQ Tau
• On-Sky Demonstration of a Linear Band-limited Mask with Application to Visual Binary Stars
• On the energy dissipation rate at the inner edge of circumbinary discs
• Time-resolved protoplanetary disk physics in DQ Tau with JWST